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cxgb4: add common api support for configuring filters 

Enable filters for non-offload configuration and add common api support
for setting and deleting filters in LE-TCAM region of the hardware.

IPv4 filters occupy one slot.  IPv6 filters occupy 4 slots and must
be on a 4-slot boundary.  IPv4 filters can not occupy a slot belonging
to IPv6 and the vice-versa is also true.

Filters are set and deleted asynchronously.  Use completion to wait
for reply from firmware in order to allow for synchronization if needed.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rahul Lakkireddy 2016-09-20 17:13:07 +05:30 committed by David S. Miller
parent d57fd6cafb
commit 578b46b938
5 changed files with 512 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -1038,7 +1038,10 @@ struct filter_entry {
u32 pending:1; /* filter action is pending firmware reply */
u32 smtidx:8; /* Source MAC Table index for smac */
struct filter_ctx *ctx; /* Caller's completion hook */
struct l2t_entry *l2t; /* Layer Two Table entry for dmac */
struct net_device *dev; /* Associated net device */
u32 tid; /* This will store the actual tid */
/* The filter itself. Most of this is a straight copy of information
* provided by the extended ioctl(). Some fields are translated to

477
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
View File

@ -33,27 +33,165 @@
*/
#include "cxgb4.h"
#include "t4_regs.h"
#include "l2t.h"
#include "t4fw_api.h"
#include "cxgb4_filter.h"
static inline bool is_field_set(u32 val, u32 mask)
{
return val || mask;
}
static inline bool unsupported(u32 conf, u32 conf_mask, u32 val, u32 mask)
{
return !(conf & conf_mask) && is_field_set(val, mask);
}
/* Validate filter spec against configuration done on the card. */
static int validate_filter(struct net_device *dev,
struct ch_filter_specification *fs)
{
struct adapter *adapter = netdev2adap(dev);
u32 fconf, iconf;
/* Check for unconfigured fields being used. */
fconf = adapter->params.tp.vlan_pri_map;
iconf = adapter->params.tp.ingress_config;
if (unsupported(fconf, FCOE_F, fs->val.fcoe, fs->mask.fcoe) ||
unsupported(fconf, PORT_F, fs->val.iport, fs->mask.iport) ||
unsupported(fconf, TOS_F, fs->val.tos, fs->mask.tos) ||
unsupported(fconf, ETHERTYPE_F, fs->val.ethtype,
fs->mask.ethtype) ||
unsupported(fconf, MACMATCH_F, fs->val.macidx, fs->mask.macidx) ||
unsupported(fconf, MPSHITTYPE_F, fs->val.matchtype,
fs->mask.matchtype) ||
unsupported(fconf, FRAGMENTATION_F, fs->val.frag, fs->mask.frag) ||
unsupported(fconf, PROTOCOL_F, fs->val.proto, fs->mask.proto) ||
unsupported(fconf, VNIC_ID_F, fs->val.pfvf_vld,
fs->mask.pfvf_vld) ||
unsupported(fconf, VNIC_ID_F, fs->val.ovlan_vld,
fs->mask.ovlan_vld) ||
unsupported(fconf, VLAN_F, fs->val.ivlan_vld, fs->mask.ivlan_vld))
return -EOPNOTSUPP;
/* T4 inconveniently uses the same FT_VNIC_ID_W bits for both the Outer
* VLAN Tag and PF/VF/VFvld fields based on VNIC_F being set
* in TP_INGRESS_CONFIG. Hense the somewhat crazy checks
* below. Additionally, since the T4 firmware interface also
* carries that overlap, we need to translate any PF/VF
* specification into that internal format below.
*/
if (is_field_set(fs->val.pfvf_vld, fs->mask.pfvf_vld) &&
is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld))
return -EOPNOTSUPP;
if (unsupported(iconf, VNIC_F, fs->val.pfvf_vld, fs->mask.pfvf_vld) ||
(is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld) &&
(iconf & VNIC_F)))
return -EOPNOTSUPP;
if (fs->val.pf > 0x7 || fs->val.vf > 0x7f)
return -ERANGE;
fs->mask.pf &= 0x7;
fs->mask.vf &= 0x7f;
/* If the user is requesting that the filter action loop
* matching packets back out one of our ports, make sure that
* the egress port is in range.
*/
if (fs->action == FILTER_SWITCH &&
fs->eport >= adapter->params.nports)
return -ERANGE;
/* Don't allow various trivially obvious bogus out-of-range values... */
if (fs->val.iport >= adapter->params.nports)
return -ERANGE;
/* T4 doesn't support removing VLAN Tags for loop back filters. */
if (is_t4(adapter->params.chip) &&
fs->action == FILTER_SWITCH &&
(fs->newvlan == VLAN_REMOVE ||
fs->newvlan == VLAN_REWRITE))
return -EOPNOTSUPP;
return 0;
}
static unsigned int get_filter_steerq(struct net_device *dev,
struct ch_filter_specification *fs)
{
struct adapter *adapter = netdev2adap(dev);
unsigned int iq;
/* If the user has requested steering matching Ingress Packets
* to a specific Queue Set, we need to make sure it's in range
* for the port and map that into the Absolute Queue ID of the
* Queue Set's Response Queue.
*/
if (!fs->dirsteer) {
if (fs->iq)
return -EINVAL;
iq = 0;
} else {
struct port_info *pi = netdev_priv(dev);
/* If the iq id is greater than the number of qsets,
* then assume it is an absolute qid.
*/
if (fs->iq < pi->nqsets)
iq = adapter->sge.ethrxq[pi->first_qset +
fs->iq].rspq.abs_id;
else
iq = fs->iq;
}
return iq;
}
static int cxgb4_set_ftid(struct tid_info *t, int fidx, int family)
{
spin_lock_bh(&t->ftid_lock);
if (test_bit(fidx, t->ftid_bmap)) {
spin_unlock_bh(&t->ftid_lock);
return -EBUSY;
}
if (family == PF_INET)
__set_bit(fidx, t->ftid_bmap);
else
bitmap_allocate_region(t->ftid_bmap, fidx, 2);
spin_unlock_bh(&t->ftid_lock);
return 0;
}
static void cxgb4_clear_ftid(struct tid_info *t, int fidx, int family)
{
spin_lock_bh(&t->ftid_lock);
if (family == PF_INET)
__clear_bit(fidx, t->ftid_bmap);
else
bitmap_release_region(t->ftid_bmap, fidx, 2);
spin_unlock_bh(&t->ftid_lock);
}
/* Delete the filter at a specified index. */
static int del_filter_wr(struct adapter *adapter, int fidx)
{
struct filter_entry *f = &adapter->tids.ftid_tab[fidx];
struct fw_filter_wr *fwr;
unsigned int len, ftid;
struct sk_buff *skb;
unsigned int len;
len = sizeof(*fwr);
ftid = adapter->tids.ftid_base + fidx;
skb = alloc_skb(len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
fwr = (struct fw_filter_wr *)__skb_put(skb, len);
t4_mk_filtdelwr(ftid, fwr, adapter->sge.fw_evtq.abs_id);
t4_mk_filtdelwr(f->tid, fwr, adapter->sge.fw_evtq.abs_id);
/* Mark the filter as "pending" and ship off the Filter Work Request.
* When we get the Work Request Reply we'll clear the pending status.
@ -74,7 +212,6 @@ int set_filter_wr(struct adapter *adapter, int fidx)
struct filter_entry *f = &adapter->tids.ftid_tab[fidx];
struct fw_filter_wr *fwr;
struct sk_buff *skb;
unsigned int ftid;
skb = alloc_skb(sizeof(*fwr), GFP_KERNEL);
if (!skb)
@ -94,8 +231,6 @@ int set_filter_wr(struct adapter *adapter, int fidx)
}
}
ftid = adapter->tids.ftid_base + fidx;
fwr = (struct fw_filter_wr *)__skb_put(skb, sizeof(*fwr));
memset(fwr, 0, sizeof(*fwr));
@ -110,7 +245,7 @@ int set_filter_wr(struct adapter *adapter, int fidx)
fwr->op_pkd = htonl(FW_WR_OP_V(FW_FILTER_WR));
fwr->len16_pkd = htonl(FW_WR_LEN16_V(sizeof(*fwr) / 16));
fwr->tid_to_iq =
htonl(FW_FILTER_WR_TID_V(ftid) |
htonl(FW_FILTER_WR_TID_V(f->tid) |
FW_FILTER_WR_RQTYPE_V(f->fs.type) |
FW_FILTER_WR_NOREPLY_V(0) |
FW_FILTER_WR_IQ_V(f->fs.iq));
@ -235,33 +370,341 @@ void clear_filter(struct adapter *adap, struct filter_entry *f)
memset(f, 0, sizeof(*f));
}
void clear_all_filters(struct adapter *adapter)
{
unsigned int i;
if (adapter->tids.ftid_tab) {
struct filter_entry *f = &adapter->tids.ftid_tab[0];
unsigned int max_ftid = adapter->tids.nftids +
adapter->tids.nsftids;
for (i = 0; i < max_ftid; i++, f++)
if (f->valid || f->pending)
clear_filter(adapter, f);
}
}
/* Fill up default masks for set match fields. */
static void fill_default_mask(struct ch_filter_specification *fs)
{
unsigned int lip = 0, lip_mask = 0;
unsigned int fip = 0, fip_mask = 0;
unsigned int i;
if (fs->val.iport && !fs->mask.iport)
fs->mask.iport |= ~0;
if (fs->val.fcoe && !fs->mask.fcoe)
fs->mask.fcoe |= ~0;
if (fs->val.matchtype && !fs->mask.matchtype)
fs->mask.matchtype |= ~0;
if (fs->val.macidx && !fs->mask.macidx)
fs->mask.macidx |= ~0;
if (fs->val.ethtype && !fs->mask.ethtype)
fs->mask.ethtype |= ~0;
if (fs->val.ivlan && !fs->mask.ivlan)
fs->mask.ivlan |= ~0;
if (fs->val.ovlan && !fs->mask.ovlan)
fs->mask.ovlan |= ~0;
if (fs->val.frag && !fs->mask.frag)
fs->mask.frag |= ~0;
if (fs->val.tos && !fs->mask.tos)
fs->mask.tos |= ~0;
if (fs->val.proto && !fs->mask.proto)
fs->mask.proto |= ~0;
for (i = 0; i < ARRAY_SIZE(fs->val.lip); i++) {
lip |= fs->val.lip[i];
lip_mask |= fs->mask.lip[i];
fip |= fs->val.fip[i];
fip_mask |= fs->mask.fip[i];
}
if (lip && !lip_mask)
memset(fs->mask.lip, ~0, sizeof(fs->mask.lip));
if (fip && !fip_mask)
memset(fs->mask.fip, ~0, sizeof(fs->mask.lip));
if (fs->val.lport && !fs->mask.lport)
fs->mask.lport = ~0;
if (fs->val.fport && !fs->mask.fport)
fs->mask.fport = ~0;
}
/* Check a Chelsio Filter Request for validity, convert it into our internal
* format and send it to the hardware. Return 0 on success, an error number
* otherwise. We attach any provided filter operation context to the internal
* filter specification in order to facilitate signaling completion of the
* operation.
*/
int __cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
unsigned int max_fidx, fidx, iq;
struct filter_entry *f;
u32 iconf;
int ret;
max_fidx = adapter->tids.nftids;
if (filter_id != (max_fidx + adapter->tids.nsftids - 1) &&
filter_id >= max_fidx)
return -E2BIG;
fill_default_mask(fs);
ret = validate_filter(dev, fs);
if (ret)
return ret;
iq = get_filter_steerq(dev, fs);
if (iq < 0)
return iq;
/* IPv6 filters occupy four slots and must be aligned on
* four-slot boundaries. IPv4 filters only occupy a single
* slot and have no alignment requirements but writing a new
* IPv4 filter into the middle of an existing IPv6 filter
* requires clearing the old IPv6 filter and hence we prevent
* insertion.
*/
if (fs->type == 0) { /* IPv4 */
/* If our IPv4 filter isn't being written to a
* multiple of four filter index and there's an IPv6
* filter at the multiple of 4 base slot, then we
* prevent insertion.
*/
fidx = filter_id & ~0x3;
if (fidx != filter_id &&
adapter->tids.ftid_tab[fidx].fs.type) {
f = &adapter->tids.ftid_tab[fidx];
if (f->valid) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 requires 4 slots and is occupying slots %u to %u\n",
fidx, fidx + 3);
return -EINVAL;
}
}
} else { /* IPv6 */
/* Ensure that the IPv6 filter is aligned on a
* multiple of 4 boundary.
*/
if (filter_id & 0x3) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 must be aligned on a 4-slot boundary\n");
return -EINVAL;
}
/* Check all except the base overlapping IPv4 filter slots. */
for (fidx = filter_id + 1; fidx < filter_id + 4; fidx++) {
f = &adapter->tids.ftid_tab[fidx];
if (f->valid) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 requires 4 slots and an IPv4 filter exists at %u\n",
fidx);
return -EINVAL;
}
}
}
/* Check to make sure that provided filter index is not
* already in use by someone else
*/
f = &adapter->tids.ftid_tab[filter_id];
if (f->valid)
return -EBUSY;
fidx = filter_id + adapter->tids.ftid_base;
ret = cxgb4_set_ftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET);
if (ret)
return ret;
/* Check to make sure the filter requested is writable ... */
ret = writable_filter(f);
if (ret) {
/* Clear the bits we have set above */
cxgb4_clear_ftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET);
return ret;
}
/* Clear out any old resources being used by the filter before
* we start constructing the new filter.
*/
if (f->valid)
clear_filter(adapter, f);
/* Convert the filter specification into our internal format.
* We copy the PF/VF specification into the Outer VLAN field
* here so the rest of the code -- including the interface to
* the firmware -- doesn't have to constantly do these checks.
*/
f->fs = *fs;
f->fs.iq = iq;
f->dev = dev;
iconf = adapter->params.tp.ingress_config;
if (iconf & VNIC_F) {
f->fs.val.ovlan = (fs->val.pf << 13) | fs->val.vf;
f->fs.mask.ovlan = (fs->mask.pf << 13) | fs->mask.vf;
f->fs.val.ovlan_vld = fs->val.pfvf_vld;
f->fs.mask.ovlan_vld = fs->mask.pfvf_vld;
}
/* Attempt to set the filter. If we don't succeed, we clear
* it and return the failure.
*/
f->ctx = ctx;
f->tid = fidx; /* Save the actual tid */
ret = set_filter_wr(adapter, filter_id);
if (ret) {
cxgb4_clear_ftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET);
clear_filter(adapter, f);
}
return ret;
}
/* Check a delete filter request for validity and send it to the hardware.
* Return 0 on success, an error number otherwise. We attach any provided
* filter operation context to the internal filter specification in order to
* facilitate signaling completion of the operation.
*/
int __cxgb4_del_filter(struct net_device *dev, int filter_id,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
struct filter_entry *f;
unsigned int max_fidx;
int ret;
max_fidx = adapter->tids.nftids;
if (filter_id != (max_fidx + adapter->tids.nsftids - 1) &&
filter_id >= max_fidx)
return -E2BIG;
f = &adapter->tids.ftid_tab[filter_id];
ret = writable_filter(f);
if (ret)
return ret;
if (f->valid) {
f->ctx = ctx;
cxgb4_clear_ftid(&adapter->tids, filter_id,
f->fs.type ? PF_INET6 : PF_INET);
return del_filter_wr(adapter, filter_id);
}
/* If the caller has passed in a Completion Context then we need to
* mark it as a successful completion so they don't stall waiting
* for it.
*/
if (ctx) {
ctx->result = 0;
complete(&ctx->completion);
}
return ret;
}
int cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs)
{
struct filter_ctx ctx;
int ret;
init_completion(&ctx.completion);
ret = __cxgb4_set_filter(dev, filter_id, fs, &ctx);
if (ret)
goto out;
/* Wait for reply */
ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
if (!ret)
return -ETIMEDOUT;
ret = ctx.result;
out:
return ret;
}
int cxgb4_del_filter(struct net_device *dev, int filter_id)
{
struct filter_ctx ctx;
int ret;
init_completion(&ctx.completion);
ret = __cxgb4_del_filter(dev, filter_id, &ctx);
if (ret)
goto out;
/* Wait for reply */
ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
if (!ret)
return -ETIMEDOUT;
ret = ctx.result;
out:
return ret;
}
/* Handle a filter write/deletion reply. */
void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
{
unsigned int idx = GET_TID(rpl);
unsigned int nidx = idx - adap->tids.ftid_base;
struct filter_entry *f;
unsigned int ret;
unsigned int tid = GET_TID(rpl);
struct filter_entry *f = NULL;
unsigned int max_fidx;
int idx;
if (idx >= adap->tids.ftid_base && nidx <
(adap->tids.nftids + adap->tids.nsftids)) {
idx = nidx;
ret = TCB_COOKIE_G(rpl->cookie);
max_fidx = adap->tids.nftids + adap->tids.nsftids;
/* Get the corresponding filter entry for this tid */
if (adap->tids.ftid_tab) {
/* Check this in normal filter region */
idx = tid - adap->tids.ftid_base;
if (idx >= max_fidx)
return;
f = &adap->tids.ftid_tab[idx];
if (f->tid != tid)
return;
}
/* We found the filter entry for this tid */
if (f) {
unsigned int ret = TCB_COOKIE_G(rpl->cookie);
struct filter_ctx *ctx;
/* Pull off any filter operation context attached to the
* filter.
*/
ctx = f->ctx;
f->ctx = NULL;
if (ret == FW_FILTER_WR_FLT_DELETED) {
/* Clear the filter when we get confirmation from the
* hardware that the filter has been deleted.
*/
clear_filter(adap, f);
if (ctx)
ctx->result = 0;
} else if (ret == FW_FILTER_WR_SMT_TBL_FULL) {
dev_err(adap->pdev_dev, "filter %u setup failed due to full SMT\n",
idx);
clear_filter(adap, f);
if (ctx)
ctx->result = -ENOMEM;
} else if (ret == FW_FILTER_WR_FLT_ADDED) {
f->smtidx = (be64_to_cpu(rpl->oldval) >> 24) & 0xff;
f->pending = 0; /* asynchronous setup completed */
f->valid = 1;
if (ctx) {
ctx->result = 0;
ctx->tid = idx;
}
} else {
/* Something went wrong. Issue a warning about the
* problem and clear everything out.
@ -269,6 +712,10 @@ void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
dev_err(adap->pdev_dev, "filter %u setup failed with error %u\n",
idx, ret);
clear_filter(adap, f);
if (ctx)
ctx->result = -EINVAL;
}
if (ctx)
complete(&ctx->completion);
}
}

1
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h
View File

@ -44,4 +44,5 @@ int set_filter_wr(struct adapter *adapter, int fidx);
int delete_filter(struct adapter *adapter, unsigned int fidx);
int writable_filter(struct filter_entry *f);
void clear_all_filters(struct adapter *adapter);
#endif /* __CXGB4_FILTER_H */

39
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -1324,19 +1324,22 @@ EXPORT_SYMBOL(cxgb4_remove_tid);
*/
static int tid_init(struct tid_info *t)
{
size_t size;
unsigned int stid_bmap_size;
unsigned int natids = t->natids;
struct adapter *adap = container_of(t, struct adapter, tids);
unsigned int max_ftids = t->nftids + t->nsftids;
unsigned int natids = t->natids;
unsigned int stid_bmap_size;
unsigned int ftid_bmap_size;
size_t size;
stid_bmap_size = BITS_TO_LONGS(t->nstids + t->nsftids);
ftid_bmap_size = BITS_TO_LONGS(t->nftids);
size = t->ntids * sizeof(*t->tid_tab) +
natids * sizeof(*t->atid_tab) +
t->nstids * sizeof(*t->stid_tab) +
t->nsftids * sizeof(*t->stid_tab) +
stid_bmap_size * sizeof(long) +
t->nftids * sizeof(*t->ftid_tab) +
t->nsftids * sizeof(*t->ftid_tab);
max_ftids * sizeof(*t->ftid_tab) +
ftid_bmap_size * sizeof(long);
t->tid_tab = t4_alloc_mem(size);
if (!t->tid_tab)
@ -1346,8 +1349,10 @@ static int tid_init(struct tid_info *t)
t->stid_tab = (struct serv_entry *)&t->atid_tab[natids];
t->stid_bmap = (unsigned long *)&t->stid_tab[t->nstids + t->nsftids];
t->ftid_tab = (struct filter_entry *)&t->stid_bmap[stid_bmap_size];
t->ftid_bmap = (unsigned long *)&t->ftid_tab[max_ftids];
spin_lock_init(&t->stid_lock);
spin_lock_init(&t->atid_lock);
spin_lock_init(&t->ftid_lock);
t->stids_in_use = 0;
t->sftids_in_use = 0;
@ -1362,12 +1367,16 @@ static int tid_init(struct tid_info *t)
t->atid_tab[natids - 1].next = &t->atid_tab[natids];
t->afree = t->atid_tab;
}
bitmap_zero(t->stid_bmap, t->nstids + t->nsftids);
/* Reserve stid 0 for T4/T5 adapters */
if (!t->stid_base &&
(CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5))
__set_bit(0, t->stid_bmap);
if (is_offload(adap)) {
bitmap_zero(t->stid_bmap, t->nstids + t->nsftids);
/* Reserve stid 0 for T4/T5 adapters */
if (!t->stid_base &&
CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
__set_bit(0, t->stid_bmap);
}
bitmap_zero(t->ftid_bmap, t->nftids);
return 0;
}
@ -4825,7 +4834,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
i);
}
if (is_offload(adapter) && tid_init(&adapter->tids) < 0) {
if (tid_init(&adapter->tids) < 0) {
dev_warn(&pdev->dev, "could not allocate TID table, "
"continuing\n");
adapter->params.offload = 0;
@ -5012,13 +5021,7 @@ static void remove_one(struct pci_dev *pdev)
/* If we allocated filters, free up state associated with any
* valid filters ...
*/
if (adapter->tids.ftid_tab) {
struct filter_entry *f = &adapter->tids.ftid_tab[0];
for (i = 0; i < (adapter->tids.nftids +
adapter->tids.nsftids); i++, f++)
if (f->valid)
clear_filter(adapter, f);
}
clear_all_filters(adapter);
if (adapter->flags & FULL_INIT_DONE)
cxgb_down(adapter);

26
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
View File

@ -1,7 +1,7 @@
/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
* Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
* Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@ -106,6 +106,7 @@ struct tid_info {
unsigned int atid_base;
struct filter_entry *ftid_tab;
unsigned long *ftid_bmap;
unsigned int nftids;
unsigned int ftid_base;
unsigned int aftid_base;
@ -126,6 +127,8 @@ struct tid_info {
atomic_t tids_in_use;
/* TIDs in the HASH */
atomic_t hash_tids_in_use;
/* lock for setting/clearing filter bitmap */
spinlock_t ftid_lock;
};
static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
@ -185,6 +188,27 @@ int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
unsigned int queue, bool ipv6);
/* Filter operation context to allow callers of cxgb4_set_filter() and
* cxgb4_del_filter() to wait for an asynchronous completion.
*/
struct filter_ctx {
struct completion completion; /* completion rendezvous */
void *closure; /* caller's opaque information */
int result; /* result of operation */
u32 tid; /* to store tid */
};
struct ch_filter_specification;
int __cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs,
struct filter_ctx *ctx);
int __cxgb4_del_filter(struct net_device *dev, int filter_id,
struct filter_ctx *ctx);
int cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs);
int cxgb4_del_filter(struct net_device *dev, int filter_id);
static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
{
skb_set_queue_mapping(skb, (queue << 1) | prio);